I've recently picked up a 2004 650GS which I am very pleased with. One thing puzzled me - the toolkit was in the useful little stash space in the tailpiece, when the manual showed it being located under the seat. I thought there was no room under the seat until I read a post on F650.co.uk showing where it should be. In the place where the toolkit should go, there is a little black box which I am sure is the immobiliser black box (fitted shortly after purchase by the original owner). It's a Meta M53T.

This is yet another reason to get rid of the damn thing. I don't like immobilisers anyway for a lot of reasons, but this one is spectacularly inconvenient for the rider. To get the bike operational, you first have to tap the brake pedal, then wipe the little fob thing against an area of the dash. Only then can you put the key in and start it. Of course, if you didn't tap the brake hard enough, or wiped the fob in slightly the wrong place, it won't start, and it's back to square one. It's driving me mad already, and I've only had the bike a couple of days.

Anyway, rambling as usual, I need to remove the immobiliser. If I had a circuit diagram, or a copy of the installation instructions, my wiring and soldering skills are good enough to let me attempt it. Of course, it's impossible to find these on the web, both for security reasons and because the M53T is now discontinued. Can anyone help with this? I have (or will have) the V5 in my name, and I have the installation certificate and invoice from when it was fitted, so I can prove it's a genuine case and not some scrote trying to fix a stolen bike.

I'm tempted to find a BMW dealer (none near here) and get them to reinstate the original wiring. The hazard switch on the bars has been removed to make way for the immobiliser LED, which is a shame. It might be easier and more reliable to get a dealer to do the job (if they will), but as someone who tries to all his own work on bike, it goes against the grain a bit.

Does anyone have any thoughts on this?

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2006 XT660R daily ride, 1994 XT600E about to be reborn, Blog: http://goingfastgettingnowhere.blogspot.com/